Question

the density of brass is 8.4 gram centimetre cube . what do you mean by the statement?

Answer 1

Basically we know that the density of any material is nothing but the mass per unit volume...
so here given is the density of brass that is 8.4 g/cm^3.....

Answer 2

Density of a substance is defined as mass per unit volume.
∴ Density=mass/volume
or
d=m/v
The density of body is the amount of matter it contains for each unit of its volume.
When we say density of brass is 8.4gm/cm³ , it means that 1cm³ of brass has a mass of 8.4g.